英文字典中文字典


英文字典中文字典51ZiDian.com



中文字典辞典   英文字典 a   b   c   d   e   f   g   h   i   j   k   l   m   n   o   p   q   r   s   t   u   v   w   x   y   z       







请输入英文单字，中文词皆可：

安装中文字典英文字典查询工具!


中文字典英文字典工具:
选择颜色:
输入中英文单字

































































英文字典中文字典相关资料:


  • Hematite - Wikipedia
    Hematite ( ˈ h iː m ə ˌ t aɪ t, ˈ h ɛ m ə- ), also spelled as haematite, is a common iron oxide compound with the formula, Fe 2 O 3 and is widely found in rocks and soils [6] Hematite crystals belong to the rhombohedral lattice system which is designated the alpha polymorph of Fe
  • Hematite | Definition, Uses, Facts | Britannica
    Hematite, heavy and relatively hard oxide mineral, ferric oxide, that constitutes the most important iron ore because of its high iron content (70 percent) and its abundance Its name is derived from the Greek word for ‘blood,’ in allusion to its red color Learn more about hematite in this article
  • Hematite | Properties, Formation, Uses, Occurrence - Geology Science
    Hematite is a mineral and a common form of iron oxide It is known for its distinctive reddish-brown to black metallic luster The name “hematite” is derived from the Greek word “haima,” which means blood, due to its reddish color when it is powdered or in a fine-grained form
  • Hematite: A primary ore of iron and a pigment mineral - Geology. com
    Hematite is the most important ore of iron Although it was once mined at thousands of locations around the world, today almost all of the production comes from a few dozen large deposits where significant equipment investments allow companies to efficiently mine and process the ore
  • All About Hematite – Uses, Properties, Color, and Worth
    Hematite is a common iron oxide mineral found in rocks and soils everywhere Hematite is commonly seen in two different forms called metallic hematite and earthy hematite Hematite can come in a variety of raw forms including crystals Metallic hematite is the shiny version of hematite where you would see a shinny reflective metallic surface
  • Hematite: Properties, Uses, Meaning – Geology In
    Hematite is an iron oxide mineral, commonly found in rocks and soil It's the most important source of iron ore and is also used in jewelry and pigments Hematite has a distinctive metallic luster and comes in various colors, ranging from black and gray to reddish-brown
  • Hematite | Common Minerals
    Hematite occurs in a range of forms, and its color can range from black to gray, or from red to brown depending on which variety is present Regardless of their different appearances, all varieties of hematite exhibit a distinctive reddish-brown streak that serves to distinguish it from most common minerals
  • Hematite, a Shape-shifting Mineral From the Stone Age
    Hematite is an iron oxide in its base form that is 70 percent iron and 30 percent oxygen, and has the chemical formula of Fe 2 O 3 As one of the most abundant minerals on the planet, it is perfect for mining to produce iron and iron-based derivatives like steel
  • Hematite (The Bloodstone Ore) - Mineral Properties and Occurence
    Hematite is the abundant form of iron oxide, natural red pigment, and an integral part of the largest iron ore deposits on Earth Highly aesthetic crystals and shiny botryoidal hematite aggregates are also very popular collector specimens
  • Hematite: Mineral information, data and localities. - mindat. org
    Hematite is rather variable in its appearance - it can be in reddish brown, ocherous masses, dark silvery-grey scaled masses, silvery-grey to black crystals, and dark-grey masses, to name a few What they all have in common is a rust-red streak (except Ti-bearing varieties which have a black streak) Black crystals may be confused with ilmenite





中文字典-英文字典  2005-2009